397732480

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20047}}^1$

素因数の和:20097

約数の個数: 64

約数和(自身を含む): 981550080

約数和(自身を除く): 583817600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 19840, 20047, 40094, 80188, 100235, 160376, 200470, 320752, 400940, 621457, 641504, 801880, 1242914, 1283008, 1603760, 2485828, 2566016, 3107285, 3207520, 4971656, 6214570, 6415040, 9943312, 12429140, 12830080, 19886624, 24858280, 39773248, 49716560, 79546496, 99433120, 198866240, 397732480]

約数ペア:

[(1, 397732480), (2, 198866240), (4, 99433120), (5, 79546496), (8, 49716560), (10, 39773248), (16, 24858280), (20, 19886624), (31, 12830080), (32, 12429140), (40, 9943312), (62, 6415040), (64, 6214570), (80, 4971656), (124, 3207520), (128, 3107285), (155, 2566016), (160, 2485828), (248, 1603760), (310, 1283008), (320, 1242914), (496, 801880), (620, 641504), (640, 621457), (992, 400940), (1240, 320752), (1984, 200470), (2480, 160376), (3968, 100235), (4960, 80188), (9920, 40094), (19840, 20047)]